The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2026
Filed:
Jun. 15, 2023
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Inventors:
Hiroto Asano, Nisshin, JP;
Shinsuke Matsuhara, Miyoshi, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 10/0525 (2010.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/583 (2010.01); H01M 10/0568 (2010.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); H01M 4/0402 (2013.01); H01M 4/0471 (2013.01); H01M 4/583 (2013.01); H01M 10/0568 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01);
Abstract
A method of producing a lithium ion secondary battery includes preparing an electrode body which includes a positive electrode and a negative electrode and in which the negative electrode contains a negative electrode material containing a porous graphite particle having open pores and SiOdisposed in the open pores, producing a battery assembly including the electrode body and a non-aqueous electrolytic solution containing LiPFwith a concentration of 1 mol/L or more, and generating lithium difluorophosphate in the electrode body.